Type 1: Seen in patients on gluten free diet (suggesting minimal amounts of gluten or gliadin are being ingested); patients with dermatitis herpetiformis; family members of celiac disease patients, not specific, may be seen in infections.

Type 2: Very rare, seen occasionally in dermatitis herpetiformis.

Type 3: Spectrum of changes seen in symptomatic celiac disease.

Simplified systems may be more reproducible (Corazza, Roberts, Ensari)

Seen in patients on gluten free diet (suggesting minimal amounts of gluten or gliadin are being ingested); patients with dermatitis herpetiformis; family members of celiac disease patients, not specific, may be seen in infections